Ratio and Proportion Questions for IBPS PO, SO, Clerk Pdf - 1

Ans: D

Since the number of black and white marbles are whole numbers, so the sum of the terms of the ratio must be a factor of 10.

1 + 4 = 5, 7 + 3 = 10 and 9 + 1 = 10, but 1 + 10 = 11, which is not a factor of 10.

Ans: C

Second son’s share = Rs. $$(10800 × {4}/{12})$$ = Rs. 3600.

Money distributed between the two daughters

= Rs. [3600 – (1000 + 600)] = Rs. 2000.

First daughter’s share = Rs. $$(2000 × {11}/{20})$$ = Rs. 1100.

Second daughter’s share = Rs. $$(2000 × {9}/{20})$$ = Rs. 900.

Ans: B

Quantity of copper in 17.5 kg of alloy = $$(17.5 × {5}/{7})$$ kg = 12. 5 kg.

Quantity of zinc in 17.5 kg of alloy = $$(17.5 × {2}/{7})$$ kg = 5 kg.

∴ Required ratio = 12.5 : (5 + 1.25) = 12.5 : 6.25 = 2 : 1.

Ans: A

A : B = 5 : 12,

B : C = 4 : 5.50 = 12 : 16.5 = 12 : $${33}/{2}$$

A : B : C = 5 : 12 : $${33}/{2}$$ = 10 : 24 : 33.

Sum of ratio terms = 10 + 24 + 33 = 67.

C’s share = Rs. $$(2010 × {33}/{67})$$ = Rs. 990.

B’s share = Rs. $$(2010 × {24}/{67})$$ = Rs. 720.

Required difference = Rs. (990 – 720) = Rs. 270.

Ans: A

Let 5kg of the first variety be mixed with 4 kg of second variety.

Then, C.P. of 9 kg of tea = Rs. (20 × 5 + 25 × 4) = Rs. 200.

S.P. of 9 kg of tea = Rs. (23 × 9) = Rs. 207.

Profit = Rs. (207 – 200) = Rs. 7.

∴ Profit % = $$({7}/{200} × 100)$$% = 3.5%.